» 
Arabic Bulgarian Chinese Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hindi Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Malagasy Norwegian Persian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Thai Turkish Vietnamese
Arabic Bulgarian Chinese Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hindi Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Malagasy Norwegian Persian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Thai Turkish Vietnamese

definitions - brightness

brightness (n.)

1.a disposition to find (or make) causes for amusement"her playfulness surprised me" "he was fun to be with"

2.shrewdness as demonstrated by being skilled in deception

3.the location of a visual perception along a continuum from black to white

4.the quality of being luminous; emitting or reflecting light"its luminosity is measured relative to that of our sun"

5.intelligence as manifested in being quick and witty

   Advertizing ▼

Merriam Webster

BrightnessBright"ness, n. [AS. beorhines. See Bright.]
1. The quality or state of being bright; splendor; luster; brilliancy; clearness.

A sudden brightness in his face appear. Crabbe.

2. Acuteness (of the faculties); sharpness 9wit.

The brightness of his parts . . . distinguished him. Prior.

Syn. -- Splendor; luster; radiance; resplendence; brilliancy; effulgence; glory; clearness.

   Advertizing ▼

definition (more)

definition of Wikipedia

synonyms - brightness

see also - brightness

phrases

analogical dictionary






Wikipedia

Brightness

                   
  Decreasing brightness with depth (underwater photo as example)

Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light.[1] In other words, brightness is the perception elicited by the luminance of a visual target. This is a subjective attribute/property of an object being observed.

Contents

  Terminology

The adjective bright derives from an Old English beorht with the same meaning via metathesis giving Middle English briht. The word is from a Common Germanic *berhtaz, ultimately from a PIE root with a closely related meaning, *bhereg- "white, bright".

"Brightness" was formerly used as a synonym for the photometric term luminance and (incorrectly) for the radiometric term radiance. As defined by the US Federal Glossary of Telecommunication Terms (FS-1037C), "brightness" should now be used only for non-quantitative references to physiological sensations and perceptions of light.[2]

A given target luminance can elicit different perceptions of brightness in different contexts; see, for example, White's illusion.

In the RGB color space, brightness can be thought of as the arithmetic mean μ of the red, green, and blue color coordinates (although some of the three components make the light seem brighter than others, which, again, may be compensated by some display systems automatically):[3]

\mu = {R + G + B \over 3 }

Brightness is also a color coordinate in the HSB or HSV color space (hue, saturation, and brightness or value).

With regard to stars, brightness is quantified as apparent magnitude and absolute magnitude.

  Brightness of sounds

The term "brightness" is also used in discussions of sound timbres, in a rough analogy with visual brightness. Timbre researchers consider brightness to be one of the perceptually strongest distinctions between sounds,[4] and formalize it acoustically as an indication of the amount of high-frequency content in a sound, using a measure such as the spectral centroid.

  See also

  Notes

  1. ^ Merriam-Webster.com Merriam-Webster Dictionary definition of bright
  2. ^ Brightness” in Federal Standard 1037C, the Federal Glossary of Telecommunication Terms (1996)
  3. ^ What are HSB and HLS?, Charles Poynton: "The usual formulation of HSB and HLS compute so-called "lightness" or "brightness" as (R+G+B)/3. This computation conflicts badly with the properties of colour vision, as it computes yellow to be about six times more intense than blue with the same "lightness" value (say L=50)."
  4. ^ D. Wessel, Timbre space as a musical control structure, Computer Music Journal, 3 (1979), pp. 45–52.

  External links

   
               

 

All translations of brightness


sensagent's content

  • definitions
  • synonyms
  • antonyms
  • encyclopedia

Dictionary and translator for handheld

⇨ New : sensagent is now available on your handheld

   Advertising ▼

sensagent's office

Shortkey or widget. Free.

Windows Shortkey: sensagent. Free.

Vista Widget : sensagent. Free.

Webmaster Solution

Alexandria

A windows (pop-into) of information (full-content of Sensagent) triggered by double-clicking any word on your webpage. Give contextual explanation and translation from your sites !

Try here  or   get the code

SensagentBox

With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. Choose the design that fits your site.

Business solution

Improve your site content

Add new content to your site from Sensagent by XML.

Crawl products or adds

Get XML access to reach the best products.

Index images and define metadata

Get XML access to fix the meaning of your metadata.


Please, email us to describe your idea.

WordGame

The English word games are:
○   Anagrams
○   Wildcard, crossword
○   Lettris
○   Boggle.

Lettris

Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.

boggle

Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !

English dictionary
Main references

Most English definitions are provided by WordNet .
English thesaurus is mainly derived from The Integral Dictionary (TID).
English Encyclopedia is licensed by Wikipedia (GNU).

Copyrights

The wordgames anagrams, crossword, Lettris and Boggle are provided by Memodata.
The web service Alexandria is granted from Memodata for the Ebay search.
The SensagentBox are offered by sensAgent.

Translation

Change the target language to find translations.
Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.

last searches on the dictionary :

2411 online visitors

computed in 0.172s

   Advertising ▼

I would like to report:
section :
a spelling or a grammatical mistake
an offensive content(racist, pornographic, injurious, etc.)
a copyright violation
an error
a missing statement
other
please precise:

Advertize

Partnership

Company informations

My account

login

registration

   Advertising ▼

Nike Zoom Hyperdisruptor Basketball Athletic Men's Shoes 9.5-13 548180 401 New (59.97 USD)

Commercial use of this term

Vintage Floral Bright Stripes Tap Panty - Size 6 Medium - Flutter - Private Sale (9.99 USD)

Commercial use of this term

Eminence Bright Skin Moisturizer 2 oz (35.9 USD)

Commercial use of this term

Womens Tranquility by Colorado Clothing Skort Skirt Athletic Golf S M L XL XXL (23.95 USD)

Commercial use of this term

New Gymboree Bright Ideas SZ ALL Pink Rose CAT Kitty 3D EARS Skimmers Shoes (24.0 USD)

Commercial use of this term

Versace Bright Crystal 3.0 oz Eau De Toilette 90ml EDT for women NIB Sealed (41.5 USD)

Commercial use of this term

550 paracord parachute cord Type III 7 Strand - 10ft 20ft 50ft 100ft (5.99 USD)

Commercial use of this term

Joy Mangano Huggable Hangers 20-pack Pant and/or Skirt Clips (8.49 USD)

Commercial use of this term

SISER EasyWeed Heat Transfer Vinyl Material 15" x 5 Yards - 26 Color Choices (37.99 USD)

Commercial use of this term

Nike Air Huarache Kids GS White Bright Mango Grey 654275-100 New DS (109.99 USD)

Commercial use of this term

Solar Powered FLAG Pole Light LED Mount flagpole No Wiring Illuminate Bright (12.94 USD)

Commercial use of this term

NEW Under Armour Exeter Sackpack #1239374 (18.99 USD)

Commercial use of this term

NEW Fitbit Flex Replacement Wristband and Clasp Size LARGE Bands (6.98 USD)

Commercial use of this term

NEW! Bright Starts Bouncer with 2 Interactive and Removable Toys, Playful Pals (27.68 USD)

Commercial use of this term

DUDLEY© BRIGHT YELLOW 11" JENNIE FINCH FAST PITCH SOFTIE SOFTBALL BRAND NEW (5.97 USD)

Commercial use of this term

3/8" GROMMETS 35 Colors, Food Grade Silicone (These Match My Straws) (12.5 USD)

Commercial use of this term

VERSACE BRIGHT CRYSTAL 3.0 OZ / 90 ML EDT women , WITH CAP NEW TESTER (NO BOX) (41.25 USD)

Commercial use of this term

GLAMGLOW GLAM GLOW BRIGHT MUD EYE TREATMENT~LOT OF 3 SAMPLES~CHROMECELLS~SEALED! (9.99 USD)

Commercial use of this term

Dan River Bright Pink Microfiber Full Sheet Set -Flat, Fitted, 2 Pillowcases New (14.99 USD)

Commercial use of this term